水下耐压壳体结构可靠性的设计方法  

Study on the reliability method for the pressure-resisted shell of sub

作　　者：吕春雷[1] 王晓天[1] 梁超 

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001

出　　处：《船舶力学》2007年第4期600-608,共9页Journal of Ship Mechanics

摘　　要：在水下耐压壳体的环肋圆柱壳结构设计中,为了保证结构的强度和稳定性,几何参数的确定必须要满足规范所要求的五个约束条件。完工后的几何尺度与设计几何尺度存在着一定的误差,可将这些误差分布密度函数认为服从正态分布,利用其约束条件结合可靠性理论建立环肋圆柱壳耐压壳体可靠性分析方法,以实际测量中统计得到的数据为已知条件给出了可靠度计算方法。　In order to make sure the strength and stability of the sub,five conditions must be satisfied in part of the geometrical parameters in sub design.Because of the certain differences existing between theory and fact,the reliability method and five conditions are used together to build a method to analyze the reliability of sub under the condition of considering those differences fit into normal distribution.The design values are also seen as the original values to help to complete this reliability method.

关 键 词：可靠性 均值 方差 密度函数 随机性 正态分布 

分 类 号：U661.43[交通运输工程—船舶及航道工程]